Fountain-pen.



L. J. PARRELL.

FOUNTAIN PEN.

APPLICATION FILED MAY 4, 1910.

Patented Aug. 1, i911.

ttorneys.

the pen is not in use and the cap is in place.4

LAWRENCE J. FARRELL, 0F JERSEY CITY HEG-HTS, NEW JERSEY, ASSGNOR 0F ONE- :HALF T0 GEORGE HOSINGER, OF JERSEY CITY HEIGHTS, NEW' JERSEY.A

FOUNTAIN-PEN.

Specication of Letters Patent.

Patented aug. i, 491i'.

applicati@ mea May 4, 1910. serial No. 559,234.`

438 Central-avenue, Jersey City Heights,

Hudson county, New Jersey,) have invented a certain new and useful Improvementin Fountain-Pens, of which the following is a specification. l.

The object I have in View is the produc-r tion of a device to prevent leaking while not in use, particularly while being carried in the pocket, and to do away with expensive, complicated and cumbersome devices heretofore used for this purpose. This and vfurther objects are more fully set fort-hin the following specification and accompanying l drawings:

Figure 1 is a longitudinal section of a fountain .pen embodying my said invention. Fig. 2 isa section of a modification of a portion of my invention. Fig. 3 is a section of another modification of my invention.

In all of the several views, the same parts are designated by the same reference chai'- acters.

In carrying out my invention provide the usual cylindrical barrel l, which carries the pen support 2, and surrounds and protects the reservoir 3. The pen support is secured to the barrel by being screwed into the latter by the screw threads Lt. The reservoir Slis in the form of a liexible. elastic.l cylindrical envelop, preferably 'made of soft rubber, and lies within a cylindrical eX- tension 5 of barrel l, which latter is prefer ably made of hard rubber or other suitable substance, and the cylindrical extension 5 is preferably made of sheet metal or other suitable material. A. cap 6 surrounds the pen supportv and the pen proper 7, and protects thelatter and also prevents leaking when not in use. The cap is shown as having a body portion secured' to the barrel l by screw threads 8. The upper end of the cap is covered by a tip 9, which is shown as screwed into the cap. So much of the invention described, except the tip, is old and well-known, but l am not aware that ithas been before suggested to make the cap with a separate tip screw threaded into it.

The first portion of my invention resides in the means to prevent leakage of ink when nis means is as follows: A cylindrical thimble 10 lies within the cap and surrounds the pen proper. The loweredge of the thimble (assuming the device to be in the position shown in Fig. l) rests upon a flange ll of the pen support 2. The 'upper face of the pen support is shown as dished, orvslightly concave, but the lo-wer edge of the thimble is on a plane. When the thimble is resting upon the flange, the point of contact is atA the perip-hery. lt is apparent that if the materials of the thimble and pen support are sufiiciently elastic,-wliich will be such if made of hard rubber,-and the.

pen support and flange are tightly pressed together, the material will be sufficiently distorted to make a close joint between the two, and the point of Contact will then not be a`mereline on the periphery of the parts, but will'be of some width. The cylindrical thimble l0 may 'be closed at the top, as

shown in Fig. l, or open, as shown in Figs.

2 and 3.

l will first describe the invention as applied to the structure shownv in Fig. l, in which the thimble is closed. The thimble is vof such a length that when the cap 6 is in place and is screwed tightly in position so that its lower edge engages with the outside of the tapering barrel l, the thimble will be tightly and closely forced into Contact with the iiange 1l, by engagement at the underside of the tip 9 with the upper part of the thimble. The outside diameter of the thimble is less than the inside diameter of' the cap, so that there is some motion of the thimble within the cap, and it can accommodate itself to any irregularities of the flange 11 and the lower edge of the thimble. To attain the same object, namely,to compensate for irregularities,-the upper face of the thimble is shown as curved, and the lower face of the tip 9 is shown as recessed. I prefer to make the shape of the recess different from the curve. As shown. in the drawings, the upper face of the thimble is formed upon a true curve, while the depression 12 in the tip is formed upon straight lines. This will reduce the place of contact between the thimble and the tip to a circular line,rand will, therefore, permit angular adjustment of the thimble within the cap.-

For the purpose of preventing the thimble dropping out when the cap is taken off the 13, which lies within the `annular recess 14 formed on the inside of the cap 6. This Hange 13 is larger than the inside 0f the main portion of the cap, therefore, when the cap is removed from the barrel, the thimble will not drop out. The parts are s0 proportioned, however, that the alining fea-z is provided with a Vcentral projection 15 having tapered walls as shown. This central projection 15 is of such a diameter that when the thimble is forced up against it, it will make a tight joint between it and the cap. In this modification of my invention the lower edge of the thimble is slightly different from Fig. 1, having beveled, or chamfered, edges 16, in order to make a tight joint with the flange 11 of the pen support 2.

Another modification of my invention is shown in Fig. 3 in which the Isame form of tip 9 is used as shown in-Fig. 1. The thim- .ble, however, is the same as that shown in Fig. 2, being openv at the top but with bev- .eled, or chamfered, upper edges 17, which make a tight joint with the lower face of the tip, when the cap is in place. It is ap parent that when the cap is in place and is screwedrupon the barrel, the thimble 10 is tightly forced against the flange 11 and the upper edge of the thimble is tightly forced against the tip 9, producing an ink-tight remain as a fixture within the cap,A and,

therefore, will not be lost when the cap is removed.

In accordance with the provisions of the patent statutes, I have described the principle of my invention, together with the apparatus which I consider represents the best embodiment thereof; but I desire it understood that su'ch apparatus is' merely illustrative and that the invention can be modilied without departing from the spirit ofthe invention. I will now describe what I claim is new therein.

Having now described my invention, what I desire to secure by Letters Patent is 1. A fountain pen having a pen support,

and a cap comprising a body portion having a shoulder on the inside. thereof, a tip secured thereto, there being an annular recess between said tip and the shoulder on the inside of said body portion, a thimble Within said cap arranged to coperate with the top of said pen support, anda ange .on said thimble lyingin said recess'.

2. A fountain p en having a pen support, in combination with a cap, said cap 'having a recess, and a tip and a thimble within the cap,said thimble havin a flange which lies within the recess and a jacent to the tip.`

This speciicatlon signed and witnessed this 5th day of April, 1910.

' LAWRENCE J. FARRELL. Witnesses:

'i JOHN L. LoTsoH,

HENRY F. CONRAD. 

